Keycloak is an open-source identity and access management software developed as a Red Hat project providing enterprise-grade authentication. The service supports single sign-on functionality enabling seamless authentication across applications. Keycloak implements OAuth and OpenID Connect standards ensuring compatibility. The platform supports LDAP integration for connecting with directory services. Keycloak includes two-factor authentication capabilities for enhanced security. The service supports self-hosting enabling complete infrastructure control. Keycloak provides comprehensive access control and permission management. The platform emphasizes flexibility and extensibility through plugins.